Skinny, I'm not sure what thread Wild is talking about but he gave me some real good insight on a problem I was having with my '88 Samurai that turned out to be jets. I'm not sure what 'fat' means but mine had zero power and the mixture meter on mine was showing it was running real lean, (and had NO power with full throttle).
When I cracked the carb open (Weber DGAV) I found that the previous owner had a 130 in the primary and a 100 in the secondary. I grabbed a 140 from a VW shop in Denver, slipped that into the primary and moved the 130 over to the secondary and it was the difference of night and day. Helped a ton! I'm not a carb expert so I'll be playing with it a little more because I am still running lean when the secondary is opened up.
I believe where you live makes a difference. Altitude makes a difference in how you should jet your carb. I live at about 8000 feet in the Colorado rockies and play most of the time between 8,000 and 12,000 and I think my primary 140, secondary 130 is close but I will be rolling them to primary 130, secondary 140 to see how that goes.
Look at the thread "My Samurai is Bogging down" or something like that to see what Wild suggested and how my progress has been to this point.